The transfer of pollen grain from anther to stigma of the same flower is called:-
self pollination
The correct option is B:-
Explanation of the correct option :
Self-pollination is the type of pollination in which the pollen grain of the same flower is transferred to the stigma of the same flower.
Explanation of the incorrect option:
Option A:
Cross-pollination is the type of pollination in which the pollen grain of one flower is transferred to the stigma of another flower.
Option C:
Ovulation is the process of the release of an egg from the ovary or follicle cell.
Option D:
Fertilization is the process of fusion of the male gamete with the female gamete.
Final answer: The transfer of pollen grain from another to the stigma of the same flower is called self-pollination.